public void Create(PointIndexer indexer, double step = 1000)
{
_step = step;
_indexer = indexer;
var pts = indexer.Points;
ds = new Dictionary <string, List <int> >();
for (int i = 0; i < pts.Length; i++)
{
if (!indexer.Contains(i))
{
continue;
}
var p = pts[i] * step;
var key = (int)(p.X) + ";" + (int)p.Y + ";" + (int)p.Z;
if (!ds.ContainsKey(key))
{
ds.Add(key, new List <int>());
}
ds[key].Add(i);
}
_clusters = ds.Select(z => new ClusterInfo()
{
Key = z.Key, Indicies = z.Value.ToArray()
}).ToArray();
}
public static PointIndexer FromPoints(Vector3d[] points)
{
PointIndexer ret = new PointIndexer();
ret.Points = points;
ret.Indicies = points.Select((z, i) => i).ToArray();
return(ret);
}
public PointIndexer GetSubIndexer(int[] inds)
{
var r = new PointIndexer()
{
Points = Points, Indicies = inds
};
r.Init();
return(r);
}
internal void Recreate(PointIndexer pin)
{
Create(pin, _step);
}
public static PointIndexer LoadPly(string path)
{
var points = new List <Vector3d>();
var rf = File.ReadAllLines(path);
bool binary = false;
int? verticies = null;
bool isBigEndian = false;
if (rf.Take(5).Any(z => z.Contains("binary")))
{
binary = true;
var bts = File.ReadAllBytes(path);
List <byte> accum1 = new List <byte>();
int pos = 0;
List <PropInfo> props = new List <PropInfo>();
bool faceSection = false;
for (int i = 0; i < bts.Length; i++)
{
accum1.Add(bts[i]);
if (bts[i] == 0x0a)
{
var str = Encoding.UTF8.GetString(accum1.ToArray());
if (str.ToLower().Contains("binary_big_endian"))
{
isBigEndian = true;
accum1.Clear();
continue;
}
if (str.ToLower().Contains("element vertex"))
{
var ar = str.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToArray();
accum1.Clear();
verticies = int.Parse(ar[2]);
continue;
}
if (str.ToLower().Contains("element face"))
{
accum1.Clear();
faceSection = true;
continue;
}
if (str.Contains("property") && !faceSection)
{
var aa1 = str.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToArray();
props.Add(new PropInfo()
{
Name = aa1[2], Type = aa1[1]
});
}
if (str.Contains("end_header"))
{
pos = i;
break;
}
accum1.Clear();
}
}
var data = bts.Skip(pos + 1).ToArray();
List <double[]> dd = new List <double[]>();
var word = props.Sum(z => z.TypeLen);
for (int i = 0; i < data.Length; i += word)
{
int shift = 0;
List <double> dd2 = new List <double>();
foreach (var prop in props)
{
if (prop.Type == "double")
{
byte[] temp = new byte[4];
Array.Copy(data, i + shift, temp, 0, 4);
if (isBigEndian && BitConverter.IsLittleEndian)
{
Array.Reverse(temp);
}
dd2.Add(BitConverter.ToDouble(temp, 0));
shift += 8;
}
if (prop.Type == "float")
{
byte[] temp = new byte[4];
Array.Copy(data, i + shift, temp, 0, 4);
if (isBigEndian && BitConverter.IsLittleEndian)
{
Array.Reverse(temp);
}
dd2.Add(BitConverter.ToSingle(temp, 0));
shift += 4;
}
}
dd.Add(dd2.ToArray());
if (verticies != null)
{
if (verticies.Value == dd.Count)
{
break;
}
}
}
for (int i = 0; i < dd.Count; i++)
{
Vector3d v = new Vector3d(dd[i][0], dd[i][1], dd[i][2]);
points.Add(v);
}
return(PointIndexer.FromPoints(points.ToArray()));
}
bool end = false;
foreach (var item in rf)
{
var ar = item.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToArray();
if (item.ToLower().Contains("element vertex"))
{
verticies = int.Parse(ar[2]);
continue;
}
if (item.ToLower().Contains("end") && item.Contains("header"))
{
end = true;
continue;
}
if (end)
{
var d1 = ar.Select(z => double.Parse(z.Replace(",", "."), CultureInfo.InvariantCulture)).ToArray();
var v1 = new Vector3d(d1[0], d1[1], d1[2]);
points.Add(v1);
if (verticies != null)
{
if (verticies.Value == points.Count)
{
break;
}
}
}
}
return(PointIndexer.FromPoints(points.ToArray()));
}
internal void Merge(PointIndexer pin)
{
Points = Points.Union(pin.Points).ToArray();
Indicies = Indicies.Concat(pin.Indicies.Select(u => u + Indicies.Length)).ToArray();
Init();
}
